Abstract
Quantitative NMR (qNMR) is an emerging analytical method that is recommended for food samples because of its simple and rapid analysis. Commonly prepared in deuterated solvents, the use of a non-deuterated solvent (no-D) for routine analysis was explored in this study. The amount of ethanol was determined in distilled spirits using Varian 500 MHz NMR spectrometer. Ethanol standards and samples were prepared in deionized water with acetonitrile as the internal standard. Using the optimized acquisition parameters, the 1H NMR spectra of the standards and samples were obtained. The ethanol content of distilled spirit samples obtained from no-D qNMR experiments was validated using GC-FID and the results obtained were not significantly different (p > 0.05) using ANOVA. The developed and validated no-D qNMR method was fast, simple, accurate, non-destructive, and provides an alternative technique for the analysis of ethanol in distilled spirits.
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